Roland chung
Trusted Information Resource
As we know, 3rd edition has added a new test for mobile equipment more than 45 kg. That is threshold test.
I believe that such new requirement is reasonable and foreseeable. However, the test method requires all wheels and castors are to impact a obstruction (20 mm high and 80 mm wide) at a speed of 0,4 m/s ± 0,1 m/s for manual mobile equipment. It seems hard to conduct this test in reality. How to maintain the speed of 0,4 m/s during the whole test is critical.
I've heard some people including test houses said that the method for threshold test is not realistic and deviates from the theory of mechanics. I think if this really is a mistake in standard, IEC committee shall modify it in the A1. But there is no technical change for the threshold test in A1(draft).
Who have experience with the threshold test, please kindly share your knowledge.
I believe that such new requirement is reasonable and foreseeable. However, the test method requires all wheels and castors are to impact a obstruction (20 mm high and 80 mm wide) at a speed of 0,4 m/s ± 0,1 m/s for manual mobile equipment. It seems hard to conduct this test in reality. How to maintain the speed of 0,4 m/s during the whole test is critical.
I've heard some people including test houses said that the method for threshold test is not realistic and deviates from the theory of mechanics. I think if this really is a mistake in standard, IEC committee shall modify it in the A1. But there is no technical change for the threshold test in A1(draft).
Who have experience with the threshold test, please kindly share your knowledge.